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View Full Version : TRX 90 starting problems and throttle response, HELP



big_poppa49
04-12-2014, 10:10 AM
I bought my son a used (but in good overall cond) 1997 TRX 90. When we got it it was dripping gas out of the overflow, so we took it and got the carb rebuilt. Now im sure this is just a adjustment issue but I will try to explain the best I can what its doing.

First off, when the motor is cold like after it has set all night it cranks right up with no choke, first pull. But then after the motor warms up some it takes pull after pull after pull after pull to FINALLY crank it. Once its running it idles nice and smooth, and drives fine EXCEPT, if you ease on the gas slowly it revs fine, but if you quickly blip the throttle it boggs and usually cuts off.

What needs to be done here? Is it just a screw that needs to be turned? If so which one and what direction? Main problem here is the cranking problem after the motor is warm.

ATV also has a brand new spark plug bought from the honda plane